Hellboy, a fictional character from the animated film 'Hellboy: Sword of Storms,' is a demon who was summoned to Earth as an infant by Nazi occultists. Raised by Professor Trevor Bruttenholm, Hellboy grows into a large, muscular being with red skin, horns (which he files down to stumps), a tail, and a right hand made of stone. In 'Sword of Storms,' he embarks on a mission to defeat supernatural forces threatening to bring chaos upon the world, showcasing his strength, resilience, and sense of humor. Hellboy is a key member of the Bureau for Paranormal Research and Defense, where he uses his unique abilities to combat dark forces.